import fetch from 'dva/fetch';
import { notification, message } from 'antd';
import { routerRedux } from 'dva/router';
import store from '../index';
import { tokensToRegExp } from 'path-to-regexp';

// const codeMessage = {
//   200: '服务器成功返回请求的数据。',
//   201: '新建或修改数据成功。',
//   202: '一个请求已经进入后台排队（异步任务）。',
//   204: '删除数据成功。',
//   400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
//   401: '用户没有权限（令牌、用户名、密码错误）。',
//   403: '用户得到授权，但是访问是被禁止的。',
//   404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
//   406: '请求的格式不可得。',
//   410: '请求的资源被永久删除，且不会再得到的。',
//   422: '当创建一个对象时，发生一个验证错误。',
//   500: '服务器发生错误，请检查服务器。',
//   502: '网关错误。',
//   503: '服务不可用，服务器暂时过载或维护。',
//   504: '网关超时。',
// };

// function checkStatus(response) {
//   const { dispatch } = store;
//   if ((response.status >= 200 && response.status < 300)) {
//     return response;
//   }
//   if (response.status == 401) {
//     dispatch(routerRedux.push('/user/login'));
//     return;
//   }
//   if (response.status == 403) {
//     dispatch(routerRedux.push('/exception/403'));
//     return;
//   }
//   if (response.status <= 504 && response.status >= 500) {
//     dispatch(routerRedux.push('/exception/500'));
//     return;
//   }
//   return;
// }

// function checkStatus(response) {
//   if (response.status >= 200 && response.status < 300) {
//     return response;
//   }
//   if (response.status == 401) {
//     return "";
//   }
//   console.log("response1111111111", response)
//   const errortext = codeMessage[response.status] || response.statusText;
//   notification.error({
//     message: `请求错误 ${response.status}:`, //${response.url}
//     description: errortext,
//   });
//   const error = new Error(errortext);
//   error.name = response.status;
//   error.response = response;
//   throw error;
// }

// export async function asyncAwaitFn() {
//   return await fetch(url, newOptions);
// }

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default async function request(url, options) {
  const defaultOptions = {
    // credentials: 'include',
  };
  const newOptions = { ...defaultOptions, ...options };
  let token = sessionStorage.getItem("token");
  // console.log("token", token)
  if (newOptions.method === 'POST' || newOptions.method === 'PUT') {
    newOptions.headers = {
      Accept: 'application/json',
      'Content-Type': 'application/json; charset=utf-8',
      token: token,
      ...newOptions.headers,
    };
    newOptions.body = JSON.stringify(newOptions.body);
  } else {
    newOptions.headers = {
      Accept: 'application/json',
      'Content-Type': 'application/json; charset=utf-8',
      token: token,
      ...newOptions.headers,
    };
  }

  try {
    const response = await fetch(url, newOptions);
    const responseJson = await response.json();
    // console.log("===========responseJson : ",responseJson)   
    if(response.status == 200){
      return responseJson;
    } 
    if(response.status == 401){
      const { dispatch } = store;
      dispatch(routerRedux.push('/user/login'));
      return responseJson;
    }
    if(response.status  <= 504 && response.status >= 500){
      const { dispatch } = store;
      dispatch(routerRedux.push('/exception/500'));
      return ;
    }
    return responseJson;
  } catch (error) {
    // console.log("====================>error : ",error)
    const { dispatch } = store;
    // dispatch(routerRedux.push('/user/login'));
  }
}
  // if (newOptions.method === 'POST' || newOptions.method === 'PUT') {
  //   if (!(newOptions.body instanceof FormData)) {
  //     newOptions.headers = {
  //       Accept: 'application/json',
  //       'Content-Type': 'application/json; charset=utf-8',
  //       // token: token,
  //       ...newOptions.headers,
  //     };
  //     newOptions.body = JSON.stringify(newOptions.body);
  //   } else {
  //     // newOptions.body is FormData
  //     newOptions.headers = {
  //       Accept: 'application/json',
  //       // token: token,
  //       ...newOptions.headers,
  //     };
  //   }
  // }
  // export async function asyncAwaitFn() {
  //   try {
  //     return await fetch(url, newOptions);
  //   } catch (e) {
  //     message.error("访问错误，请重试。。。")
  //     throw "出现网络问题"; 
  //   }
  // }

 
  // let response = null;
  // try {
  //   // response = asyncAwaitFn;
  //   response = fetch(url, newOptions);
  // } catch (e) {
  //   message.error("访问错误，请重试。。。")
  //   throw "出现网络问题";
  // }
  // checkStatus(response);
  // return response.json();

 
  /*
  return fetch(url, newOptions)
    .then(checkStatus)
    .then(response => {
      if(response == "") {
        console.log("=================> response:",response)
        const { dispatch } = store;
        // dispatch(routerRedux.push('/user/login'));
        return JSON.parse("{data:\"error\",result:\"\"}");
      }
      if (newOptions.method === 'DELETE' || response.status === 204) {
        return response.text();
      }

      return response.json();
    })
    .catch(e => {
      // console.log("response.22222222222", response)
      const { dispatch } = store;
      const status = e.name;
      if (status === 401) {
        // dispatch({
        //   type: 'login/logout',
        // });
        dispatch(routerRedux.push('/user/login'));
        return;
      }
      if (status === 403) {
        dispatch(routerRedux.push('/exception/403'));
        return;
      }
      if (status <= 504 && status >= 500) {
        dispatch(routerRedux.push('/exception/500'));
        return;
      }
      if (status >= 404 && status < 422) {
        dispatch(routerRedux.push('/exception/404'));
      }
    });
    */
// }
